Fabric-frame for embroidering-machines.



' A." BOSSHARD.

FABRIC FRAME FOR; EMBROIDERING MACHINES. APPLIOATION FILED MAY 5. 1a1o.981,836.

Patented Jan. 17,1911.

J w J g i L T q r E:

UNITED STATES PATENT QFFIQE.

ARNOLD BOSSHARD, 0F ARBON, SWITZERLAND, ASSIGNOR TO THE FIRM OF AKTIEN-GESELLSCHAFT ARNOLD B. HEINE 8: CO., OF ARBON, SWITZERLAND.

FABRIC-FRAME FOR EMBROIDERING-IVIACHINES.

To all whom it may concern:

Be it known that I, ARNOLD BOSSHARD, a citizen of the Republic ofSwitzerland, residing at Rebenstrasse, Arbon, Switzerland, have inventedcertain new and useful Improvements in Fabric- Frames forEmbroidering-l/Iachines; and I do hereby declare the following to be afull, clear, and eXact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersor figures of reference marked thereon, which form a part of thisspecification.

In embroidering machines the fabric frames, according to presentpractice, are counterbalanced by weights, whereby there is introducedinto the machine a dead load, which quite uselessly has to be overcomeby the operative in actuating the pantograph.

According to my invention special counterweights are dispensed with, twoor more fabric frames being so coupled that they mutually balance eachother. In this manner an operative is able to shift several fabricframes without having to exert himself more than is ordinarily necessaryin moving a single such frame.

A practical embodiment of my invention is illustrated in theaccompanying drawing, in which the figure is an elevation.

a and b are the fabric frames of two like embroidering machines c d,located onebehind the other. These frames are suspended from shafts g [Lby means of sector-wheels e f. On the shaft 9 there is also mounted asector-wheel i, and on the shaft la. a sectorwheel 70. Thesesector-wheels 2' 7c are shifted through an angle of 180 degreesrelatively to each other, and they are connected by a steel-band m, orother suitable member. The arm of lever with which the frames at Z)respectively act on the shafts g h, is identical in each case, andlikewise the arm of lever with which the band m by means of thesector-wheels 2' 70 respectively, act-s on the shafts g h. Thus theframe of the one machine serves as counterweight for the frameSpecification of Letters Patent.

Application filed May 5, 1910.

Patented Jan. 17, 1911.

Serial No. 559,510.

of the other machine. With machines so grouped it is only necessary tocouple a pantograph with the frame of the one machine. Actuation of thepantograph will then move not only the frame attached to it, but alsothe other frame, without any greater resistances having to be overcomethan is the case when the frame attached to the pantograph is balancedby means of a counterweight in the ordinary manner. If the embroideringmachines are arranged side by side, so that their frames lie in the sameplane, the two frames are connected by a band or other suitable member,which is passed over pulleys.

By means of the new system of balancing embroidering machine fabricframes, the operative, without having to exert any more force thanordinarily, can move several frames instead of merely a single frame.For frames coupled as above described, on actuation by means of a commonpantograph, offer the same resistance as a single frame of the samesize. in conjunction with a dead load as counterweight. In similarmanner two or more frames belonging to the same machine can be coupledtogether, so that they balance each other without auxiliary means.

Having now particularly described and ascertained the nature of the saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is:

In embroidering machinery, in combina tion, two fabric frames suspendedone behind the other, a shaft located above each frame, a sector-wheel011 each shaft, flexible means connecting each sector-wheel with theframe below it, a second sector-wheel mounted on each shaft, andflexible means connecting these two latter wheels, substantially asdescribed.

In testimony that I claim the foregoing as my invention, I have signedmy name in presence of two subscribing witnesses.

ARNOLD BOSSHARD. Witnesses:

J OSEPI-I Hnorrr, RANDALL ATKINSON.

